INTERFACE_NAMSIZ is just a redefine of IFNAMSIZ and IFNAMSIZ
is the standard for interface name length on all platforms
that FRR currently compiles on.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Currently when one interface changes its VRF, zebra will send these messages to
all daemons in *order*:
1) `ZEBRA_INTERFACE_DELETE` ( notify them delete from old VRF )
2) `ZEBRA_INTERFACE_VRF_UPDATE` ( notify them move from old to new VRF )
3) `ZEBRA_INTERFACE_ADD` ( notify them added into new VRF )
When daemons deal with `VRF_UPDATE`, they use
`zebra_interface_vrf_update_read()->if_lookup_by_name()`
to check the interface exist or not in old VRF. This check will always return
*NULL* because `DELETE` ( deleted from old VRF ) is already done, so can't
find this interface in old VRF.
Send `VRF_UPDATE` is redundant and unuseful. `DELETE` and `ADD` are enough,
they will deal with RB tree, so don't send this `VRF_UPDATE` message when
vrf changes.
Since all daemons have good mechanism to deal with changing vrf, and don't
use this `VRF_UPDATE` mechanism. So, it is safe to completely remove
all the code with `VRF_UPDATE`.
Signed-off-by: anlan_cs <anlan_cs@tom.com>
Append zebra and lib to use muliple SRv6 segs SIDs, and keep one
seg SID for bgpd and sharpd.
Note: bgpd and sharpd compilation relies on the lib and zebra files,
i.e if we separate this: lib or zebra or bgpd or sharpd in different
commits - this will not compile.
Signed-off-by: Dmytro Shytyi <dmytro.shytyi@6wind.com>
After Zebra knows it's capability surrounding v6 with v4 nexthops
have it send this ability up to interested parties.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Add a new notification zapi message type. A zapi client
that uses opaque messages can register to be notified
when a server for an opaque type is present.
Signed-off-by: Mark Stapp <mjs@labn.net>
Include the sending zapi client info (proto, instance, and
session id) in each opaque zapi message. Add opaque 'init'
apis for clients who want to encode their opaque data inline,
into the zclient's internal stream buffer. Use these init apis
in the TE/link-state lib code, instead of hand-coding the
zapi opaque header info.
Signed-off-by: Mark Stapp <mjs@labn.net>
An L3VPN network can be configured on the main BGP instance,
with an SRv6 SID. By declaring a network, a seg6local route
is created but remains invalid.
The below BGP VPN configuration the default VRF has been
used:
> router bgp 1
> address-family ipv6 unicast
> sid vpn export auto
> rd vpn export 1:30
> rt vpn both 77:77
> import vpn
> export vpn
> network 2001:7::/64
> exit-address-family
The below seg6local route has been added:
> # show ipv6 route
> [..]
> B 2001:db8:2:2:300::/128 [20/0] is directly connected, unknown inactive, seg6local End.DT6 table 254, seg6 ::, weight 1, 00:00:07
>
When creating the seg6local route, an interface is used as nexthop.
The interface index is obtained from the vrf identifier. This is
true when using VRF interfaces, but is wrong when using the lo
interface which usually has the '1' ifindex whereas the vrf id for
the default VRF is 0.
Get the appropriate index from the vrf identifier.
The below seg6local route is visible:
> # show ipv6 route
> [..]
> B>* 2001:db8:1:1:300::/128 [20/0] is directly connected, lo, seg6local End.DT6 table 254, seg6 ::, weight 1, 00:00:15
>
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Effectively a massive search and replace of
`struct thread` to `struct event`. Using the
term `thread` gives people the thought that
this event system is a pthread when it is not
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Add the ability to specify the label type along with the labels
you are passing to zebra in zapi_nexthop. This is needed as we
abstract the label code to be re-used by evpn as well as mpls.
Protocols need to be able to set the type of label they have attached.
Signed-off-by: Stephen Worley <sworley@nvidia.com>
This commit adds ZAPI encoders & decoders for traffic control operations, which
include tc_qdisc, tc_class and tc_filter.
Signed-off-by: Siger Yang <siger.yang@outlook.com>
At this point add abilty for the encode/decode of the
resilience down ZAPI to zebra. Just hookup sharpd
at this point in time.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
FRR does not use the NLM_F_APPEND semantics ( in fact I would argue that
the NLM_F_APPEND semantics just introduce pain for all parties involved )
I would also argue that most people who use the kernel netlink api
have recognized that NLM_F_APPEND for a route is a recipe for disaster
that is well documented and as such it is not used as anything other
than a curiousity by operators.
See:
https://bugzilla.redhat.com/show_bug.cgi?id=1337855https://github.com/thom311/libnl/issues/226
Are 2 great examples of how confusing it is for anyone in user
space to know what the correct thing to do is. Given that
new fields can be added with no semantics to allow us to know
what has resulted in a change or not.
In an attempt to recognize this, let's note that FRR
believes it has gotten out of sync with the kernel.
Future commits will react to the desynchronized route
and request from the kernel a reload of that specific
route if possible.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Multipath route may have mixed nexthops of EVPN and IP unicast. Move
EVPN flag to nexthop to support such cases.
Signed-off-by: Xiao Liang <shaw.leon@gmail.com>
Don't rely on the OS interface name length definition and use the FRR
definition instead.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
By changing this API call to use a `struct ipaddr`, which encodes the
type of IP address with it. (And rename/remove the `IPV4` from the
command name.)
Also add a comment explaining that this function call is going to be
obsolete in the long run since pimd needs to move to proper MRIB NHT.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Currently the nexthop tracking code is only sending to the requestor
what it was requested to match against. When the nexthop tracking
code was simplified to not need an import check and a nexthop check
in b8210849b8 for bgpd. It was not
noticed that a longer prefix could match but it would be seen
as a match because FRR was not sending up both the resolved
route prefix and the route FRR was asked to match against.
This code change causes the nexthop tracking code to pass
back up the matched requested route (so that the calling
protocol can figure out which one it is being told about )
as well as the actual prefix that was matched to.
Fixes: #10766
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
This removes a giant `switch { }` block from lib/zclient.c and
harmonizes all zclient callback function types to be the same (some had
a subset of the args, some had a void return, now they all have
ZAPI_CALLBACK_ARGS and int return.)
Apart from getting rid of the giant switch, this is a minor security
benefit since the function pointers are now in a `const` array, so they
can't be overwritten by e.g. heap overflows for code execution anymore.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
These are no longer really needed. The client just needs
to call nexthop resolution instead.
So let's remove the zapi types.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Insist on the fact that zclient neighbor state flags are
mapped over netlink state flags. List all the defines
currently known on kernel, and create a netlink API to
convert netlink values to zclient values. The function is
simplified as it is a 1-1 match.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
As NHRP expects some notification of neighboring entries on GRE
interface, when a new interface notification is encountered, the
exact neighbor state flag is found. Previously, the flag passed
to the upper layer was forced to NDM_STATE which is REACHABLE,
as can be seen on below trace:
2021/08/25 10:58:39 NHRP: [QQ0NK-1H449] Netlink: new-neigh 102.1.1.1 dev gre1 lladdr 10.125.0.2 nud 0x2 cache used 1 type 5
When passing the real value, NHRP received an other value like STALE.
2021/08/25 11:28:44 NHRP: [QQ0NK-1H449] Netlink: new-neigh 102.1.1.1 dev gre1 lladdr 10.125.0.2 nud 0x4 cache used 0 type 5
This flag is important for NHRP, as it permits to monitor the link
layer of NHRP entries.
Fixes: d603c0774e ("nhrp, zebra, lib: enforce usage of zapi_neigh_ip structure")
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Adding defensive code to the interface_link_params zebra callback
to check if the link params changed before taking action.
Signed-off-by: Karen Schoener <karen@voltanet.io>
https://github.com/FRRouting/frr/pull/5865#discussion_r597670225
As this comment says. ZEBRA_FLAG_XXX should not have been used.
To communicate SRv6 Route Information. A simple Nexthop Flag would
have been sufficient for SRv6 information. And I fixed the whole
thing that way.
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
This commit add usuful function to configure SRv6 localsid
which is represented with seg6local lwt route.
Now, it can support only NEXTHOP_TYPE_IFINDEX route.
Actual configurationof SRv6 localsid is performed with
ZEBRA_ROUTE_ADD. So this is just a wrapper function
for route-install.
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
This commit add new nexthop's addional object for SRv6
routing about seg6 route. Before this commit,
we can add MPLS info as additional object on nexthop.
This commit make it add more support about seg6 routes.
seg6 routes are ones of the LWT routing mechanism,
so configuration of seg6local routes is performed by
ZEBRA_ROUTE_SEND, it's same as MPLS configuration.
Real configuration implementation isn't implemented at
this commit. later commit add that. This commit add
only nexthop additional object and some misc functions.
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
This commit is a part of #5853 works that add new structures for
SRv6-locator. This structure will be used by zebra and another
routing daemon and its ZAPI messaging to manage SRv6-locator.
Encoder/decoder for ZAPI stream is also added by this commit.
Real configuration mechanism isn't implemented at this commit.
later commit add real configure implementation. This commit add only
SRv6-locator's structures and misc functions.
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
This commit is a part of #5853 works that add new nexthop's addional
object for SRv6 routing about seg6local route. Before this commit,
we can add MPLS info as additional object on nexthop.
This commit make it add more support about seg6local routes.
seg6local routes are ones of the LWT routing mechanism,
so configuration of seg6local routes is performed by
ZEBRA_ROUTE_SEND, it's same as MPLS configuration.
Real configuration implementation isn't implemented at this commit.
later commit add that. This commit add only nexthop additional object
and some misc functions.
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
3 new gre commands are available:
- GRE_GET to permit a daemon to retrieve gre information.
- GRE_UPDATe is the reply message from zebra to the daemon. as it is a
syncronous request, the GRE_GET expected will have to match the vrf id
where the gre information is wished. this has an impact on label
manager with change in APIs.
- SET_GRE_SOURCE. this command will be stubbed for now, assuming that
the gre interface is set accordingly by external script.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Use unsigned value for all RA requests to Zebra
- encoding signed int as unsigned is bad practice
- RA interval is never, and should never be, negative
Signed-off-by: Quentin Young <qlyoung@nvidia.com>
zapi_nbr structure is renamed to zapi_neigh_ip.
Initially used to set a neighbor ip entry for gre interfaces, this
structure is used to get events from the zebra layer to nhrp layer.
The ndm state has been added, as it is needed on both sides.
The zebra dplane layer is slightly modified.
Also, to clarify what ZEBRA_NEIGH_ADD/DEL means, a rename is done:
it is called now ZEBRA_NEIGH_IP_ADD/DEL, and it signified that this
zapi interface permits to set link operations by associating ip
addresses to link addresses.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
EVPN neighbor operations were already done in the zebra dataplane
framework. Now that NHRP is able to use zebra to perform neighbor IP
operations (by programming link IP operations), handle this operation
under dataplane framework:
- assign two new operations NEIGH_IP_INSTALL and NEIGH_IP_DELETE; this
is reserved for GRE like interfaces:
example: ip neigh add A.B.C.D lladdr E.F.G.H
- use 'struct ipaddr' to store and encode the link ip address
- reuse dplane_neigh_info, and create an union with mac address
- reuse the protocol type and use it for neighbor operations; this
permits to store the daemon originating this neighbor operation.
a new route type is created: ZEBRA_ROUTE_NEIGH.
- the netlink level functions will handle a pointer, and a type; the
type indicates the family of the pointer: AF_INET or AF_INET6 if the
link type is an ip address, mac address otherwise.
- to keep backward compatibility with old queries, as no extension was
done, an option NEIGH_NO_EXTENSION has been put in place
- also, 2 new state flags are used: NUD_PERMANENT and NUD_FAILED.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
this api is needed for nhrp. the goal is to implement it in zebra, while
other daemon will used it.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
